I can't seem to find out how to have separate `arquillian.xml` files, but it looks like we can define multiple containers within a single `arquillian.xml` file and then specify which container each test should target. So we could have one container use `standalone-modeshape.xml` and run some tests against that while configure the other container to use `standalone-modeshape-tests.xml`.

See the [documentation](https://docs.jboss.org/author/display/ARQ/Multiple+Containers) for details.

To summarize, I think we should change the `standalone-modeshape.xml` file to use a variable for the Git source, change the `arquillian.xml` file to specify this environment variable's value in this pull-request. 

Then we can discuss whether it's worthwhile to open a new JIRA issue (perhaps targeted to 3.2) to improve our AS7 configuration files to separate out the test-specific repositories into multiple configuration files, and then modify our integration tests to use these separate containers.